ancient sediments
1Ancient DNA — Adna redirects here. For the unincorporated community in Washington, see Adna, Washington .Ancient DNA can be loosely described as any DNA recovered from biological samples that have not been preserved specifically for later DNA analyses.… …
2atmosphere, evolution of — Introduction the development of Earth s (Earth) atmosphere across geologic time. The process by which the current atmosphere arose from earlier conditions is complex; however, evidence related to the evolution of Earth s atmosphere, though… …
3Archaea — Archea redirects here. For the geologic eon, see Archean. For the spider family, see Archaeidae. Archaea Temporal range: Paleoarchean – Recent Halobacteria sp. strain NRC 1, each cell about 5 μm long …
4clay mineral — any of a group of hydrous aluminum silicate minerals, as kaolinite, illite, and montmorillonite, that constitute the major portion of most clays. [1945 50] * * * Any of a group of important hydrous aluminum silicates with a layered structure and… …
5agriculture, origins of — Introduction the active production of useful plants or animals in ecosystems that have been created by people. Agriculture has often been conceptualized narrowly, in terms of specific combinations of activities and organisms wet rice production… …
6Археи — Halobacteria, штамм NRC 1, каждая клетка около 5 мкм длиной …
7Sedimentary depositional environment — In geology, sedimentary depositional environment describes the combination of physical, chemical and biological processes associated with the deposition of a particular type of sediment and, therefore, the rock types that will be formed after… …
8Geography of Sri Lanka — Sri Lanka Native name: Nickname: India s Teardrop Pearl of the Indian Ocean Map Sri Lanka …
9Ore genesis — The various theories of ore genesis explain how the various types of mineral deposits form within the Earth s crust. Ore genesis theories are very dependent on the mineral or commodity. Ore genesis theories generally involve three components:… …
10Archaea — Archées …
